Self-suction type liquid sampling bottle and sampling method

Abstract

The invention discloses a self-suction type liquid sampling bottle and a sampling method, and belongs to the technical field of sampling devices.The self-suction type liquid sampling bottle comprises a bottle plug and a light-transmitting bottle body, a bottle body of the bottle body comprises a straight barrel section and a corrugated section, the corrugated section has elasticity and can deform to be used for adjusting the negative pressure condition of an inner cavity of the bottle body, and at least two annular flanges are arranged on the outer wall of the bottle body at intervals; and when the airflow passes through the bottle body and the conveying pipeline, an air vortex is formed in an area among the annular flanges. The liquid level of feed liquid in the sampling bottle can be conveniently monitored in real time through the bottle body made of the light-transmitting material, the sampling amount can be more accurately controlled and adjusted in time, the corrugated section of the bottle body has elasticity and can be compressed and stretched, the negative pressure state in the sampling bottle can be established by extruding the corrugated section, leakage points of the bottle plug are avoided, the cushioning effect can be achieved, and the sampling effect is improved. When airflow enters the space between the two annular flanges, air vortex is generated to form an annular air film layer, so that the contact friction between the sampling bottle and the conveying pipeline is reduced, and the stability and the safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sampling devices, in particular to a self-priming liquid sampling bottle and a sampling method. Background Art

[0002] In radioactive environment plants such as fuel reprocessing plants and nuclear power plants, a large amount of liquid sampling and control operations are involved. Sampling and analyzing these liquids is an important means to determine the operation status of the project, monitor the process and the composition and properties of the liquid, and ensure the safety of operation. The liquids in radioactive environment plants have the characteristics of high complexity, high radiation, high corrosion and high toxicity, and the storage containers are generally in an inaccessible closed environment, so usually only indirect sampling methods can be adopted. At present, the sampling and delivery method of liquids in strong ionizing radiation environments in China mainly adopts a pneumatic sampling system. The system uses a sampling bottle to absorb the liquid sample to be tested, and then transports it to different areas through a pipeline to achieve sampling and delivery of the liquid to be tested.

[0003] The special sampling bottles currently used have the following problems: (1) The light transmittance of the bottle is poor. It is difficult to observe the liquid level in the bottle when extracting liquid, and it is impossible to judge whether the sampling volume is appropriate. The sampling success rate is invisible and uncontrollable. It is a blind operation and the success rate is difficult to control; (2) When using, it is necessary to pierce the sealing pad in advance to evacuate the sampling bottle. After the vacuum is established inside the sampling bottle, the liquid is extracted by negative pressure. The same equipment cannot complete the vacuum and liquid extraction. The transportation from the vacuum equipment to the liquid extraction equipment depends on the transportation pipeline. The secondary needle puncture is performed during sampling, which is cumbersome and further damages the sealing of the sampling bottle; (3) During long-distance pipeline transportation, the sampling bottle and the pipeline are closely connected. Contact collision will cause varying degrees of damage to the sealing of the sampling bottle during transportation, affecting the vacuum degree in the sampling bottle, resulting in too low a sampling volume or even sampling failure, making it difficult to accurately control the sampling volume, or the sampling liquid leaks from the pinholes in the sealing structure, causing radioactive contamination to pipelines, commutators and other equipment. In the long term, it will inevitably affect the sensors and other sensitive components installed thereon, affecting the accuracy and stability of the system operation. (4) At the same time, the currently used threaded tightening and sealing gasket sealing method may also become loose due to frequent rotation and collision with the pipeline, resulting in a decrease in the sealing effect of the sampling bottle, which may also cause leakage and contamination of radioactive liquid.

[0004] In the current sampling and sample delivery process, it is difficult to ensure sampling accuracy and movement stability of the sampling bottle. The process is complicated and may cause leakage of radioactive liquid, increase operating costs and maintenance costs, and affect the stable operation of the process and the economy of the factory. The present invention proposes a new solution to the above problems. Summary of the invention

[0005] In order to overcome at least one of the above disadvantages, the present invention provides a self-priming liquid sampling bottle and a sampling method. The purpose of the present invention can be achieved by adopting the following technical solutions: A first aspect of the present invention provides a self-priming liquid sampling bottle for use in a radioactive environment, the self-priming liquid sampling bottle comprising: A bottle body, wherein the bottle body is made of a light-transmitting material, and comprises a bottle bottom, a bottle body and a bottle mouth, wherein the bottle body comprises a straight tube section and a corrugated section connected to each other, and the corrugated section is elastic and can be deformed to adjust the negative pressure of the chamber in the bottle body; A bottle stopper, wherein the bottle stopper is elastic and at least a portion of the bottle stopper is embedded in the bottle mouth to form a seal; Wherein, annular flanges are provided at both ends of the bottle body and between the straight section and the corrugated section. The annular flanges protrude from the straight section and the corrugated section. When the airflow passes through between the bottle body and the conveying pipe, air vortices can be formed in the area between the several annular flanges.

[0006] In one possible implementation manner, the bottle body is made of a thermoplastic polyurethane elastomer modified composite material, and the bottle body is an integrally molded structure.

[0007] In one possible implementation, the straight tube section is connected to the bottle bottom, and one end of the corrugated section is connected to the straight tube section; The other end of the corrugated section is connected to the bottle mouth, or the other end of the corrugated section is connected to the bottle mouth through another straight tube section.

[0008] In one possible embodiment, the outer diameters of the annular flanges are the same for contacting with the conveying pipe.

[0009] In one possible implementation manner, the corrugated section includes a plurality of wave crests and wave troughs arranged in sequence, and the air flow passing through the bottle body and the conveying pipe can form an air vortex at the position of the wave trough.

[0010] In one possible implementation manner, the annular flange is provided at one end of the straight section away from the corrugated section, at one end of the corrugated section away from the straight section, and between the straight section and the corrugated section. The outer diameter of the corrugated section is greater than the outer diameter of the straight section. When the airflow passes through between the bottle body and the conveying pipe, an air vortex can be formed at the position of the straight section.

[0011] In one possible implementation manner, a marking portion is provided on the outer wall of the bottle body, and the marking portion can be used for spraying, coding, and marking operations.

[0012] In one embodiment, the bottle stopper comprises: A bottle stopper body, the bottle stopper body being used to be embedded in the bottle mouth; A first sealing flange, which is arranged at one end of the bottle stopper body and protrudes from the bottle stopper body in a circumferential direction to contact with an end surface of the bottle mouth to form a seal; A second sealing flange is arranged at the other end of the bottle stopper body and protrudes circumferentially from the bottle stopper body to contact with the stopper in the bottle mouth to form a seal.

[0013] In one embodiment, the shape of the second sealing flange matches the shape of the stopper. The stopper in the bottle mouth comprises a plane, and the contact surface between the second sealing flange and the stopper in the bottle mouth is a plane; or, The stopper in the bottle mouth includes an inclined surface, and an end of the stopper close to the axis of the bottle body is inclined toward a side close to the bottle bottom, and a contact surface between the second sealing flange and the stopper in the bottle mouth is an inclined surface; or, The stopper in the bottle mouth comprises a concave arc surface, and the contact surface between the second sealing flange and the stopper in the bottle mouth is a arc surface.

[0014] In one possible implementation manner, a groove is provided in the middle of the exposed end surface of the bottle stopper to reduce the thickness of the bottle stopper that needs to be pierced by a needle; and / or, The inner side wall of the bottle mouth is provided with a convex portion, and the convex portion squeezes the portion of the bottle plug located in the bottle mouth to form a stopper when the bottle plug moves along the axial direction of the bottle body.

[0015] A second aspect of the present invention provides a sampling method, which is applied to the self-priming liquid sampling bottle described in any one of the first aspects, and the steps of the sampling method include: The bottle body is squeezed to fold the corrugated section to discharge part of the air in the cavity of the bottle body, and the bottle body and the bottle stopper are assembled and sealed to form a complete sampling bottle, and a negative pressure is formed in the cavity of the sampling bottle; The sampling bottle is pneumatically transported to the sampling station through the conveying pipeline, and the sampling needle pierces the bottle stopper into the chamber, and the liquid sample in the material tank is sucked into the sampling bottle through the sampling needle by negative pressure; By observing the liquid level in the sampling bottle, it is judged whether the sampling volume has reached the preset volume. When the liquid level is lower than the preset height, the manipulator drives the sampling bottle to move downward repeatedly to fold the corrugated section to discharge part of the air in the chamber of the sampling bottle, and the liquid sample in the material tank is sucked into the sampling bottle through the sampling needle again by negative pressure until the liquid level reaches the preset height; The robot arm drives the sampling bottle to move upward and away from the sampling needle, and the sampling bottle is pneumatically transported to the next area through the conveying pipeline.

[0016] Beneficial technical effects of the present invention: According to the content of the present disclosure, the self-priming liquid sampling bottle can monitor in real time whether the liquid level in the sampling bottle reaches a preset height through the bottle body made of a light-transmitting material, and can perform repeated sampling to ensure that the sampling amount of the sampling bottle meets the standard. The sampling amount can be controlled more accurately by directly observing the liquid level, and can be adjusted in time to ensure that the sampling amount meets the preset standard, thereby avoiding the situation where the sampling amount is too small or the sampling fails, and improving accuracy and safety; the bottle body includes a straight section and a corrugated section, and the corrugated section is elastic and can be compressed and stretched, which is convenient for adjusting the negative pressure of the chamber in the bottle body, and the negative pressure state in the sampling bottle can be established by squeezing the corrugated section, without destroying the bottle stopper structure by acupuncture, To avoid leakage points in the bottle stopper, the elastic structure of the corrugated tube section plays a good shock-absorbing role during transportation, thereby improving the stability of the transportation process; an annular flange is arranged on the bottle body, and the annular gap between the annular flange and the transportation pipeline is accurately controlled to avoid wear caused by direct contact between the bottle stopper and the corrugated section and the transportation pipeline, thereby improving transportation stability; during pneumatic transportation, when the airflow enters between the two annular flanges, air vortices are generated, and an annular air film layer is formed between the corrugated section and the straight section, which applies force to the sampling bottle to push the sampling bottle to move, thereby reducing the contact friction between the sampling bottle and the transportation pipeline, reducing the vibration of the sampling bottle during transportation, improving stability and safety, and further ensuring the sealing of the sampling bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the accompanying drawings, the following are given by way of example and not limitation: Figure 1 A schematic diagram of the overall structure at an angle is shown; Figure 2 A schematic diagram of the overall structure from another angle is shown; Figure 3 A cross-sectional view of the overall structure is shown; Figure 4 A schematic diagram showing the airflow direction of the sampling bottle in the conveying pipeline is shown; Figure 5 A cross-sectional view of the structure of the bottle mouth and the bottle stopper is shown; Figure 6 A cross-sectional view of the structure of the bottle stopper is shown; Figure 7 An enlarged schematic diagram of the structure of the bottle mouth and the bottle stopper is shown; Figure 8 A schematic structural diagram of a stopper is shown; Fig. 9 A schematic diagram of the structure of another stopper is shown; Fig.10 A schematic diagram of the structure of another stop is shown; Fig.11 A schematic diagram showing the structure of the bottle body and the bottle stopper at an angle; Fig.12The schematic diagram of the structure of the sampling bottle during the sampling process is shown.

[0018] In the figure: 1. Bottle body; 2. Bottle stopper; 11. straight section; 12. corrugated section; 13. bottle mouth; 14. annular flange; 21. bottle stopper body; 22. first sealing flange; 23. second sealing flange; 24. groove; 131. Projection; 132. Stop. DETAILED DESCRIPTION

[0019] In the following detailed disclosure, these embodiments are fully described with reference to the accompanying drawings. In order to make the technical scheme of the present invention more clear and specific to those skilled in the art, the implementation methods described below are not limited to this. The present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings.

[0020] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0022] The first aspect of the present invention, as Figure 1-Figure 11 As shown, a self-priming liquid sampling bottle is provided, which is applied to radioactive environment. The self-priming liquid sampling bottle comprises a bottle body 1 and a bottle stopper 2. The bottle body 1 is made of light-transmitting material. The bottle body 1 comprises a bottle bottom, a bottle body and a bottle mouth 13. The bottle body comprises a straight section 11 and a corrugated section 12 connected to each other. The corrugated section 12 is elastic and can produce deformation to adjust the negative pressure of the inner chamber of the bottle body 1; the bottle stopper 2 is elastic, and at least a part of the bottle stopper 2 is embedded in the bottle mouth 13 to form a seal; annular flanges 14 are provided at both ends of the bottle body and between the straight section 11 and the corrugated section 12. The annular flange 14 protrudes from the straight section 11 and the corrugated section 12. When the airflow passes through between the bottle body 1 and the conveying pipeline, air vortices can be formed in the area between the several annular flanges 14.

[0023] The self-priming liquid sampling bottle provided in this embodiment facilitates real-time monitoring of whether the liquid level in the sampling bottle reaches a preset height through the bottle body 1 made of translucent material. The operator can observe the liquid level changes during the sampling process in real time. When the sampling amount does not meet the standard, the sampling can be repeated. The sampling amount can be controlled more accurately and can be adjusted in time to ensure that the sampling amount meets the preset standard, avoiding the situation where the sampling amount is too small or the sampling fails, thereby improving the sampling efficiency, accuracy and safety. Preset height lines of different milliliters can also be marked on the sampling bottle to further improve the convenience of observation.

[0024] The self-priming liquid sampling bottle provided in this embodiment has a bottle body 1 including a bottle bottom, a bottle body and a bottle mouth 13. The bottle body includes a straight section 11 and a corrugated section 12. The corrugated section 12 is elastic and can be compressed and stretched, which is convenient for adjusting the negative pressure in the chamber of the bottle body 1. The negative pressure state in the sampling bottle can be established by squeezing the corrugated section 12, and there is no need to destroy the structure of the bottle plug 2 by acupuncture, so as to avoid leakage points in the bottle plug 2. The straight section 11 ensures the rigidity and stability of the bottle body 1. The straight section 11 provides a smooth surface, which is conducive to the smooth flow of the liquid. The corrugated section 12 increases the elasticity of the bottle body 1. During the pneumatic conveying process, the corrugated section 12 is a corrugated tubular structure with a relatively thin wall thickness. The good elastic structure of the corrugated section 12 makes the sampling bottle When the sample bottle is subjected to external force or vibration, the deformation of the corrugated section 12 can absorb and disperse these forces to play a buffering role, which helps to reduce the impact of vibration on the conveying system and has a good shock-absorbing effect. At the same time, it can also avoid the damage of the seal between the bottle stopper 2 and the bottle body 1 by vibration, thereby ensuring the sealing effect; during the pneumatic conveying process, the material liquid may be damaged or produce adverse changes due to vibration. The shock-absorbing effect of the corrugated section 12 can reduce the impact of such vibration on the material, thereby protecting the integrity and quality of the material, and can also reduce the wear of the sampling bottle and the conveying pipeline caused by vibration, thereby extending the service life of the sampling bottle and the conveying pipeline, reducing maintenance costs, and improving the stability and reliability of the conveying process.

[0025] The self-priming liquid sampling bottle provided in this embodiment has a plurality of annular flanges 14 arranged on the bottle body to prevent the bottle stopper 2 and the corrugated section 12 from directly contacting with the delivery pipe and causing wear, thereby reducing the wear on the straight section 11, the corrugated section 12 and the bottle stopper 2. When the bottle body 1 moves at a high speed in the pipe, the annular flange 14 provides sufficient impact resistance and friction resistance to prevent the shedding of fragments and obvious friction debris from causing movement obstacles inside the pipe, thereby improving the stability and friction resistance of the overall structure of the sampling bottle and increasing the service life of the sampling bottle; the annular flange 14 contacts with the delivery pipe, thereby reducing the friction between the bottle stopper 2 and the pipe wall of the delivery pipe. The direct contact area reduces the friction between the sampling bottle and the tube wall, reduces wear and resistance, and helps to improve the transportation efficiency; by accurately controlling the annular gap between the outer diameter of the annular flange 14 and the inner diameter of the delivery pipe, the annular flange 14 can well limit the sampling bottle when the sampling bottle moves in the pipe, and can ensure that the sampling bottle maintains a predetermined position and posture in the pneumatic delivery pipe, avoiding unnecessary rotation or tilting, reducing vibration and deviation, and preventing the sampling bottle from getting stuck or blocking the pipe during transportation, so that the sampling bottle can be smoothly transported in the pneumatic transmission pipe, improving the transportation stability, reliability and safety.

[0026] The self-priming liquid sampling bottle provided in this embodiment is provided with at least three annular flanges 14 at intervals. The three annular flanges 14 are respectively located at the two ends of the bottle body and between the corrugated section 12 and the straight section 11, which helps to form a specific airflow pattern. When the airflow enters the annular flange 14, due to the presence of the annular flange 14, the airflow path is changed and air vortices are generated on the outer peripheral sides of the straight section 11 and the corrugated section 12. The vortex effect helps to enhance the disturbance of the airflow, thereby improving the suspension effect of the sampling bottle during transportation; due to the effect of the air vortex, an annular air film layer is formed on the corrugated section 12 and the straight section 11, which can move the air The mechanical air bearing is applied to the sampling bottle, and the air film layer plays a role of lubrication and protection, reducing the direct contact and friction between the body and the delivery pipeline, thereby extending the service life of the equipment; the air vortex is used to apply force to the sampling bottle to push the sampling bottle to move, reducing the contact friction between the sampling bottle and the delivery pipeline, reducing the vibration of the sampling bottle during transportation, improving the efficiency of the pneumatic transportation system, improving stability and safety, and further ensuring the sealing of the sampling bottle. The structural innovation of the self-priming liquid sampling bottle establishes a principle structure, which ensures the application of the advanced aerodynamic principle of pneumatic bearings in the sampling bottle.

[0027] In one possible implementation manner, the bottle body 1 is made of a thermoplastic polyurethane elastomer modified composite material, and the bottle body 1 is an integrally molded structure.

[0028] Among them, the bottle body 1 is made of thermoplastic polyurethane elastomer modified composite material, which has the characteristics of corrosion resistance, radiation resistance, translucency, wear resistance and impact resistance, and good fluidity of the material in the molten state. The entire sampling bottle is integrated through injection molding, and the structure is complete and stable. It can ensure that after the bottle body 1 is soaked in 90% concentration nitric acid for 40 hours, the bellows elasticity is still good, and the bottle body 1 is basically free of corrosion. The thermoplastic polyurethane elastomer modified composite material itself has good elasticity and wear resistance, which enables the sampling bottle to better adapt to the changes and friction of the conveying pipeline during pneumatic conveying and maintain a stable state of motion. The corrugated section 12 can further provide a buffering effect to reduce the impact of vibration on the bottle body.

[0029] Among them, the bottle body 1 is in a translucent state, so that the operator can easily observe the state and liquid level of the material in the bottle, improve the observation effect of the internal sampling liquid, improve work efficiency, and reduce the risk of the liquid being exposed to the external environment; at the same time, during the pneumatic conveying process, the translucent bottle body allows real-time monitoring of the flow of the material, which helps to promptly discover and deal with any potential problems, such as blockage or leakage.

[0030] In one possible implementation, Figure 1 and Figure 3 As shown, the straight section 11 is connected to the bottle bottom, and one end of the corrugated section 12 is connected to the straight section 11 .

[0031] It can be understood that due to the elastic properties of the thermoplastic polyurethane elastomer modified composite material itself, in order to ensure the rigidity of the overall structure of the sampling bottle during transportation, the straight section 11 is a straight tubular structure with a relatively thick wall thickness. The straight section 11 ensures the rigidity and stability of the bottle body 1. At the same time, through the length design of the straight section 11, when the sampling bottle reaches the sampling station to absorb liquid, the corrugated section 12 is compressed, and the needle tip of the sampling needle is just close to the bottom of the sampling bottle and does not contact the bottom of the sampling bottle. This design can allow the sampling bottle to absorb liquid to the maximum value; the corrugated section 12 is a corrugated tubular structure with a relatively thin wall thickness. The corrugated section 12 can adjust the negative pressure and has an elastic buffering effect.

[0032] In specific implementation, the robot clamps the bottom of the bottle and drives the sampling bottle to move to the sampling station for sampling. In order to ensure the structural rigidity of the clamping position, the straight tube section 11 is connected to the bottle bottom to maintain the rigidity of the lower half of the sampling bottle to meet the clamping and transportation needs.

[0033] It is understandable that the structure, shape and size of the bottle body 1 can be designed according to actual needs, including but not limited to length, width, diameter, wall thickness and other data, as long as it can meet the needs of sampling and transportation.

[0034] Among them, Figure 1 and Figure 3 As shown, the other end of the corrugated section 12 can be connected to the bottle mouth 13, that is, the bottle body 1 has a bottle bottom-straight tube section 11-corrugated section 12-bottle mouth 13 structure. The bottle bottom, the straight tube section 11 and the bottle mouth 13 have excellent rigidity. The corrugated section 12 is arranged between the straight tube section 11 and the bottle mouth 13, which ensures the stability of the overall structure of the bottle body 1.

[0035] It can be understood that the inner wall of the straight tube section 11 is a smooth surface, which is conducive to the smooth flow of the liquid, while the inner wall of the corrugated section 12 is a corrugated surface, which provides additional friction and resistance when the liquid flows, and helps to slow down the flow rate near the bottle mouth 13. The slowing of the flow rate helps to reduce the impact and splashing caused by rapid flow, and plays a buffering role, thereby protecting the integrity of the liquid and the stability of the internal structure of the sampling bottle. The design of the corrugated section 12 realizes a stopping effect on the flow of the liquid toward the bottle mouth 13. By adjusting the shape and distribution of the corrugations, a flow resistance point can be formed at a specific position, thereby guiding the liquid to form a stable flow pattern before reaching the bottle mouth 13, which helps to prevent the liquid from overflowing or splashing due to excessively fast flow during the sampling process, and improves the sealing and safety of the sampling bottle during transportation.

[0036] Among them, the other end of the corrugated section 12 can be connected to the bottle mouth 13 through another straight section 11, that is, the bottle body 1 has a bottle bottom-straight section 11-corrugated section 12-straight section 11-bottle mouth 13 structure. The bottle bottom, the straight section 11 and the bottle mouth 13 have excellent rigidity. The corrugated section 12 is arranged between the two straight sections 11 to ensure the stability of the overall structure of the bottle body 1.

[0037] It can be understood that the inner walls of the two straight sections 11 are both smooth surfaces, which are conducive to the smooth flow of the liquid, while the inner wall of the corrugated section 12 located in the middle is a corrugated surface. The unique uneven structure of the corrugated section 12 provides additional friction and resistance when the liquid flows, effectively slowing down the flow rate of the liquid. The corrugated section 12 can reduce the fluctuation and impact of the liquid when the liquid is subjected to external forces, such as changes in air flow in pneumatic transportation or changes in the direction of the conveying pipeline, protect the bottle body 1 structure from excessive stress, and maintain the uniformity and consistency of the liquid. At the same time, the corrugated section 12 can guide the flow direction of the liquid, so that it flows more orderly in the bottle body 1, which helps to reduce the formation of eddies and turbulence, and improves the controllability of the liquid in the sampling bottle during transportation. Through the alternating design of the straight section 11 and the corrugated section 12, the bottle body 1 can provide the necessary buffering effect while ensuring the smooth flow of the liquid, ensuring the stability and safety of the liquid in the sampling bottle during pneumatic transportation.

[0038] In one possible implementation, Figure 3 As shown, the outer diameter of the annular flange 14 is the same for contacting the conveying pipe.

[0039] The annular flange 14 is arranged on the outer wall of the bottle body, and the axis of the annular flange 14 coincides with the axis of the bottle body 1 . The outer diameters of the annular flange 14 are the same, and can form uniform contact with the inner wall of the delivery pipe.

[0040] The annular flange 14 is arranged on the outer wall of the bottle body, and the annular flange 14 increases the wall thickness, so that the rigidity of both ends of the bottle body is stronger, thereby improving the structural stability and service life of the bottle body 1.

[0041] Among them, the uniform outer diameter of the annular flange 14 is helpful for contacting with the conveying pipe, forming a radial limit for the bottle body 1, ensuring that the bottle body 1 maintains a stable position and direction during pneumatic conveying, and preventing vibration and deviation caused by airflow changes or other external forces. Due to the limiting effect of the annular flange 14, the vibration of the bottle body 1 during the conveying process is reduced, which is beneficial to protecting the bottle body 1 and the liquid inside it from damage, and can also ensure the smoothness and reliability of the conveying. By reducing vibration and deviation, the energy consumed in overcoming vibration and deviation is reduced, so that more energy can be used to push the bottle body 1 forward, thereby improving the overall efficiency of the pneumatic conveying system.

[0042] Among them, a number of annular flanges 14 arranged at intervals on the bottle body form supports at both ends and the middle of the bottle body to prevent the bottle body from collapsing and deforming, thereby improving the stability of the bottle body 1 structure, especially at the bends of the conveying pipeline, the maximum outer surface of the corrugated section 12 will not have any contact with the inner wall of the pipeline, ensuring that the corrugated section will not be damaged due to friction with the inner wall of the pipe during continuous, long-distance, and high-speed movement; it also achieves the effect of a necking structure, providing a specific path for the flow of air during pneumatic conveying. When the airflow enters between the two annular flanges 14, the airflow changes direction to form an air vortex, and the airflow produces a rotation effect in the space between the two annular flanges 14, and a circumferential air film layer is formed between the two annular flanges 14 on the outer peripheral side of the bottle body, that is, An annular air film layer is formed on the outer circumference of the straight section 11 and the corrugated section 12 to support the sampling bottle with the air film, which helps to suspend the bottle body 1 of the sampling bottle in the center position of the conveying pipe through air vortices. When the sampling bottle deviates from the central axis of the conveying pipe, the air film will automatically adjust the air pressure to return the sampling bottle to the center position, and use the gas dynamic pressure to achieve radial positioning, reducing contact with the wall of the conveying pipe, so that the sampling bottle can pass through the conveying pipe more quickly, thereby improving the efficiency and safety of transportation. The same outer diameter of the annular flange 14 ensures that the airflow can maintain a uniform flow rate and direction when passing through the annular flange 14, and will not be turbulent due to changes in the shape or size of the annular flange 14, thereby reducing the energy loss of the airflow and helping to maintain the bottle body 1 in a stable state during transportation.

[0043] Among them, Figure 4As shown, the corrugated section 12 includes a plurality of wave crests and wave troughs arranged in sequence, and the air flow passing through the bottle body 1 and the delivery pipe can form an air vortex at the wave trough position. When the air flow passes through the bottle body 1 and the delivery pipe, the air flow path will be changed due to the structure of the corrugated section 12, the flow velocity in the narrow channel at the wave crest position will increase, the air flow pressure will decrease, and the pressure in front of the wave crest will be much higher than the pressure in the back, thereby forming an air vortex at the wave trough position, which helps to reduce the friction between the air flow and the bottle body 1 and improve the delivery efficiency.

[0044] Among them, Figure 4 As shown, an annular flange 14 is provided at one end of the straight section 11 away from the corrugated section 12, at one end of the corrugated section 12 away from the straight section 11, and between the straight section 11 and the corrugated section 12. The outer diameter of the corrugated section 12 is larger than the outer diameter of the straight section 11. When the airflow passes through the bottle body 1 and the conveying pipeline, an air vortex can be formed at the position of the straight section 11.

[0045] It can be understood that annular flanges 14 are provided at both ends of the bottle body, one of the annular flanges 14 is located near the bottle mouth 13, and the other annular flange 14 is located near the bottom of the bottle and fits with the claws of the mechanical arm of the pneumatic sample feeding device, so that it can be stably clamped by the mechanical arm and can perform compression and stretching sampling operations; the outer diameter of the straight section 11 is smaller than the outer diameter of the corrugated section 12, and the outer diameter of the straight section 11 is smaller than the outer diameter of the annular flange 14. By providing the annular flange 14 between the straight section 11 and the corrugated section 12, the straight section 11 forms a necking structure, so that the airflow forms air vortices at the positions of the straight section 11 and the corrugated section 12, thereby reducing the direct contact between the airflow and the bottle body 1, reducing friction and resistance, and improving the conveying efficiency.

[0046] In one possible implementation manner, a marking portion is provided on the outer wall of the bottle body 1, and the marking portion can be used for performing inkjet printing, coding, and marking operations.

[0047] Among them, a marking portion is provided on the outer wall of the bottle body 1. After the straight tube section 11 is processed by a precision injection molding process, it can be written with polyurethane ink. In actual use, operations such as spraying, coding, and marking can be performed on the bottle body 1. For example, the outer wall of the straight tube section 11 can be polished to increase the surface roughness, so as to improve the convenience of marking.

[0048] Traditional sampling bottles are threadedly connected, and the bottle cap is provided with a flexible bottle stopper 2. However, the threaded connection is easily loosened or even falls off due to vibration and collision during transportation, resulting in the destruction of the seal inside the sampling bottle. Before sampling, it may cause insufficient negative pressure, insufficient sampling volume or even sampling failure. After sampling, it may cause leakage of the material liquid and pollute the transportation pipeline.

[0049] In one possible implementation, Figure 5-Figure 11As shown, the bottle stopper 2 includes a bottle stopper body 21, a first sealing flange 22 and a second sealing flange 23. The bottle stopper body 21 is used to be embedded in the bottle mouth 13. The first sealing flange 22 is arranged at one end of the bottle stopper body 21 and protrudes circumferentially from the bottle stopper body 21 for contacting with the end surface of the bottle mouth 13 to form a seal. The second sealing flange 23 is arranged at the other end of the bottle stopper body 21 and protrudes circumferentially from the bottle stopper body 21 for contacting with the stopper 132 in the bottle mouth 13 to form a seal.

[0050] It is understandable that the bottle stopper 2 is elastic and can be embedded in the bottle mouth 13 and tightly attached to the wall of the bottle mouth 13 to form a seal, thereby preventing the vacuum in the sampling bottle from being destroyed and preventing the liquid in the sampling bottle from leaking.

[0051] Among them, Figure 6 and Figure 7 As shown, the first sealing flange 22 at one end of the stopper body 21 is thicker to facilitate contact with the end face of the bottle mouth 13, and the second sealing flange 23 at the other end of the stopper body 21 is thinner to facilitate passing through the bottle mouth 13 and contacting the stopper 132 inside the bottle mouth 13.

[0052] Among them, the bottle stopper body 21 constitutes the basic structure of the bottle stopper 2, and has certain elasticity and toughness to adapt to the sealing requirements under different conditions. When the bottle stopper 2 is assembled with the bottle body 1, the bottle stopper body 21 and the second sealing flange 23 are embedded in the bottle mouth 13, the outer diameter of the second sealing flange 23 is larger than the outer diameter of the bottle stopper body 21, and the second sealing flange 23 and the stopper 132 in the bottle mouth 13 are tightly attached to form the first sealing defense line to prevent the liquid in the bottle body 1 from entering between the bottle stopper body 21 and the inner wall of the bottle mouth 13; the bottle stopper body 21 is a columnar structure and the outer wall is tightly attached to the inner wall of the bottle mouth 13 to form the second sealing defense line; the outer diameter of the first sealing flange 22 is larger than the outer diameter of the bottle stopper body 21, and the first sealing flange 22 and the end face of the bottle mouth 13 are tightly attached to form the third sealing defense line to prevent the liquid in the bottle body 1 from leaking out of the sampling bottle. Through multiple guarantees, the bottle stopper 2 ensures the purity of the liquid and the sealing integrity of the sampling bottle.

[0053] It can be understood that the outer diameters of the first sealing flange 22 and the second sealing flange 23 are both larger than the outer diameter of the stopper body 21. The two sealing flanges respectively cover the contact surface between the stopper body 21 and the inner wall of the bottle mouth 13, thereby providing redundant sealing protection, greatly reducing the risk of liquid leakage or contamination, and also reducing the impact of external factors on the liquid in the bottle, such as vibration, temperature changes or pressure fluctuations. The stopper 2 is not easy to shift or fall off from the bottle mouth 13, thereby enhancing the stability of the sampling bottle during transportation.

[0054] In one possible implementation, Figure 7-Figure 10 As shown, the shape of the second sealing flange 23 is matched with the shape of the stop 132 .

[0055] It can be understood that the stopper body 21 is in close contact with the inner wall of the bottle mouth 13 to prevent leakage of the liquid in the bottle or entry of external impurities, and the second sealing flange 23 is in close contact with the stopper 132 in the bottle mouth 13 to cover the contact surface between the stopper body 21 and the inner wall of the bottle mouth 13, and the shape of the second sealing flange 23 is adapted to the shape of the stopper 132 to ensure that the two can fit closely, further enhancing the sealing effect, and through the close cooperation between the second sealing flange 23 and the stopper 132, the stopper 132 can form a stopper for the movement direction of the stopper 2 away from the bottle body 1, so that the stopper 2 can be more firmly fixed on the bottle mouth 13 and is not easy to fall off, which can effectively prevent leakage or accidental opening during transportation or inspection.

[0056] Among them, Figure 6 and Figure 7 As shown, the stopper 132 in the bottle mouth 13 includes a plane, and the contact surface between the second sealing flange 23 and the stopper 132 in the bottle mouth 13 is a plane.

[0057] Among them, Figure 8 As shown, the stopper 132 in the bottle mouth 13 includes an inclined surface, and the end of the stopper 132 close to the axis of the bottle body is inclined toward the side close to the bottle bottom, and the contact surface between the second sealing flange 23 and the stopper 132 in the bottle mouth 13 is an inclined surface; or, Among them, Fig. 9 and Fig.10 As shown, the stopper 132 in the bottle mouth 13 includes a concave arc surface, and the contact surface between the second sealing flange 23 and the stopper 132 in the bottle mouth 13 is an arc surface.

[0058] It can be understood that the stopper 132 is a structure extending inward from the inside of the bottle mouth 13, which is used to interact with the second sealing flange 23 to enhance the seal and prevent the stopper 2 from falling off. The shape of the stopper 132 can be various, such as a plane, a slope or an arc. The shape of the stopper 132 can be selected according to the specific application requirements and the design of the bottle. The shape of the stopper 2 is matched with the stopper 132 to ensure optimal sealing and ease of use. By designing the stopper 132 to be of different shapes, a greater force needs to be overcome to make the stopper 2 detach from the bottle mouth 13, thereby improving the stability of the structure of the stopper 2 and the bottle mouth 13.

[0059] In one possible implementation, Figure 6 , Fig.11 and Fig.12 As shown, a groove 24 is provided in the middle of the exposed end surface of the bottle stopper 2 to reduce the thickness of the bottle stopper 2 that needs to be pierced by a needle.

[0060] Among them, a groove 24 is provided on the exposed end face of the bottle stopper 2, that is, the groove 24 is provided on the end face of the first sealing flange 22, so as to reduce the thickness of the bottle stopper 2 that the sampling needle needs to pierce through, reduce the difficulty and the required force of puncture, reduce the risk of accidental rupture or breakage of the bottle stopper 2 due to excessive force, and further ensure the integrity and safety of the contents in the bottle; at the same time, the groove 24 serves as an obvious marking point, which helps to align and position more accurately during puncture, thereby improving the accuracy and efficiency of the operation; by reducing the thickness of the puncture point, it helps to reduce the bottle stopper 2 debris or particles that may be generated during the puncture process, and can further protect the liquid in the bottle from contamination.

[0061] In one possible implementation, Figure 6 and Figure 7 As shown, the end surface on the inner side of the bottle stopper 2 is a raised diverter surface, which is used to divert the liquid in the sampling bottle and reduce the impact of the flowing liquid on the bottle stopper 2.

[0062] Among them, the end face on the inner side of the bottle stopper 2 is a raised diverter face, that is, the end face of the second sealing flange 23 is raised outward, the diverter face may include a bevel or an arc surface, the axial distance between the center position of the diverter face and the bottom of the bottle is smaller than the axial distance between the outer edge of the diverter face and the bottom of the bottle, that is, the center position of the diverter face is raised toward the inside of the bottle, when the liquid flows toward the bottle stopper 2, the raised diverter face will cause the liquid to flow along different paths, thereby dispersing the impact force, and changing the contact angle and flow path of the liquid during flow by the diverter face, thereby reducing the direct impact force of the liquid on the bottle stopper 2, and preventing the bottle stopper 2 from falling off during transportation, helping to protect the bottle stopper 2 from wear and damage during long-term use, and extending the service life of the bottle stopper 2; the diverter face can also increase the stability of the liquid flow, and diverting the liquid makes the liquid more evenly distributed in the bottle, reduces the formation of turbulence and vortices, and is conducive to maintaining the smoothness of the flow.

[0063] In one possible implementation, Figure 7 and Figure 8 As shown, the inner side wall of the bottle mouth 13 is provided with a protrusion 131, and the protrusion 131 squeezes a part of the bottle plug 2 located in the bottle mouth 13 to form a stopper when the bottle plug 2 moves along the axial direction of the bottle body 1.

[0064] Among them, the inner wall of the bottle mouth 13 is provided with a radially extending convex portion 131, and the elastic bottle stopper 2 can be deformed when squeezed and return to its original shape after the pressure is released. When the bottle stopper 2 is inserted into the bottle mouth 13, the convex portion 131 on the inner wall of the bottle mouth 13 will exert an extrusion effect on the bottle stopper 2, so that the bottle stopper 2 is constrained in the radial direction and is difficult to fall off. Due to the squeezing of the convex portion 131, the contact area between the bottle stopper 2 and the inner wall of the bottle mouth 13 is increased, thereby increasing the friction between the two, which helps to prevent the bottle stopper 2 from accidentally falling off when subjected to external force. The structure is simple and the cost is low. No additional fasteners or seals are required. An effective anti-fall-off effect can be achieved only through the structure of the bottle mouth 13 and the bottle stopper 2, which can effectively prevent leakage and pollution and improve the safety of the transportation process.

[0065] The second aspect of the present invention, as Figure 1-Figure 12 As shown, a sampling method is provided, which is applied to any one of the self-priming liquid sampling bottles in the first aspect, and the steps of the sampling method include: squeezing the bottle body 1 so that the corrugated section 12 is folded to discharge part of the air in the inner chamber of the bottle body 1, assembling the bottle body 1 and the bottle stopper 2 to seal to form a complete sampling bottle, and forming a negative pressure in the inner chamber of the sampling bottle; the sampling bottle is pneumatically transported to the sampling station through a conveying pipeline, and the sampling needle is inserted into the bottle stopper 2 to enter the chamber, and the liquid sample in the material trough is sucked into the sampling bottle through the sampling needle by negative pressure; judging whether the sampling volume reaches the preset volume based on the observation of the liquid level in the sampling bottle, when the liquid level is lower than the preset height, the manipulator drives the sampling bottle to move downward repeatedly for multiple times so that the corrugated section 12 is folded to discharge part of the air in the inner chamber of the sampling bottle, and the liquid sample in the material trough is sucked into the sampling bottle through the sampling needle again by negative pressure until the liquid level reaches the preset height; the manipulator drives the sampling bottle to move upward to disengage from the sampling needle, and the sampling bottle is pneumatically transported to the next area through the conveying pipeline.

[0066] It is understandable that in the preparation stage before sampling, the bottle body 1 is squeezed to fold the corrugated section 12 to discharge part of the air in the inner chamber of the bottle body 1, and the bottle body 1 and the bottle stopper 2 are assembled to ensure sealing to form a complete sampling bottle. At this time, a negative pressure environment is formed in the inner chamber of the sampling bottle. In the transportation and sampling stage, the sampling bottle is pneumatically transported to the sampling station through the conveying pipeline, and the mechanical claw clamps the annular flange 14 at the bottom of the bottle to move the sampling bottle upside down to the sampling station, aligns the bottle stopper 2 with the sampling needle and lowers it until the sampling needle penetrates the bottle stopper 2 and enters the chamber, and the liquid in the material tank is sucked into the sampling bottle through the sampling needle by the negative pressure principle. In the sampling volume judgment and adjustment stage, the liquid level in the sampling bottle is observed to determine whether the sampling volume has reached the preset amount. If the liquid level is lower than the preset height, the manipulator is started to drive the sampling bottle downward, so that the corrugated section 12 is folded again to discharge part of the air in the chamber of the sampling bottle. By repeating the above steps, the liquid sample in the trough is sucked into the sampling bottle again by negative pressure until the liquid level reaches the preset height. In the sampling and transportation stage, the manipulator drives the sampling bottle to move upward and detach from the sampling needle. The sampling bottle that has completed sampling is pneumatically transported to the next area through the transportation pipeline for subsequent processing or analysis.

[0067] The sampling method provided in this embodiment is applied to any one of the self-priming liquid sampling bottles in the first aspect. It can establish a negative pressure environment by changing the shape of the sampling bottle itself, and there is no need to draw a vacuum by puncturing the bottle stopper 2, so as to avoid damaging the structure of the bottle stopper 2 before sampling, thereby ensuring the stability of the negative pressure environment in the sampling bottle; after the first sampling, the negative pressure environment can be re-established by squeezing the bottle body 1 to take samples again, until the sampling amount reaches the standard and the sampling operation is completed; the bottle stopper 2 after sampling is only punctured once, and the degree of damage to the structure is low, and it is not easy to leak. The above-mentioned sampling method can ensure the sealing of the bottle body 1 and the bottle stopper 2 to maintain the negative pressure environment in the sampling bottle. During the sampling process, the changes in the liquid level are closely observed, and the sampling amount is adjusted in time, thereby ensuring the accuracy and reliability of the sampling bottle during use, improving the efficiency and success rate of sampling, and improving the efficiency and safety during transportation.

[0068] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0070] In view of the above detailed description, these and other changes can be made to these embodiments, and this written description includes the best mode embodiments to disclose the present invention. The scope of the patent obtained by the present invention is defined by the claims, which are not limited by the present disclosure, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the scope disclosed by the present invention, according to the technical solution and its conception of the present invention, is equivalent to or changes, and all are within the protection scope of the present invention.

Claims

1. A self-priming liquid sampling bottle, characterized in that: Applied in radioactive environment, the self-priming liquid sampling bottle comprises: A bottle body (1), the bottle body (1) being made of a light-transmitting material, the bottle body (1) comprising a bottle bottom, a bottle body and a bottle mouth (13), the bottle body comprising a straight tube section (11) and a corrugated section (12) connected to each other, the corrugated section (12) being elastic and capable of deforming to adjust the negative pressure of the inner chamber of the bottle body (1); A bottle stopper (2), the bottle stopper (2) being elastic, and at least a portion of the bottle stopper (2) being embedded in the bottle mouth (13) to form a seal; Wherein, annular flanges (14) are provided at both ends of the bottle body and between the straight section (11) and the corrugated section (12); the annular flanges (14) protrude from the straight section (11) and the corrugated section (12); when airflow passes through between the bottle body (1) and the conveying pipe, air vortices can be formed in the area between the annular flanges (14).

2. The self-priming liquid sampling bottle according to claim 1, characterized in that: The bottle body (1) is made of a thermoplastic polyurethane elastomer modified composite material, and the bottle body (1) is an integrally formed structure.

3. The self-priming liquid sampling bottle according to claim 2, characterized in that: The straight tube section (11) is connected to the bottle bottom, and one end of the corrugated section (12) is connected to the straight tube section (11); The other end of the corrugated section (12) is connected to the bottle mouth (13), or the other end of the corrugated section (12) is connected to the bottle mouth (13) via another straight tube section (11).

4. The self-priming liquid sampling bottle according to any one of claims 1 to 3, characterized in that: The annular flange (14) has the same outer diameter for contacting with the conveying pipeline.

5. The self-priming liquid sampling bottle according to claim 4, characterized in that: The corrugated section (12) comprises a plurality of wave crests and wave troughs arranged in sequence, and air flow passing through the bottle body (1) and the conveying pipe can form air vortices at the positions of the wave troughs.

6. The self-priming liquid sampling bottle according to claim 5, characterized in that: An annular flange (14) is provided at one end of the straight section (11) away from the corrugated section (12), at one end of the corrugated section (12) away from the straight section (11), and between the straight section (11) and the corrugated section (12); the outer diameter of the corrugated section (12) is greater than the outer diameter of the straight section (11); and when the airflow passes through between the bottle body (1) and the conveying pipe, an air vortex can be formed at the position of the straight section (11).

7. The self-priming liquid sampling bottle according to claim 1 or 2, characterized in that: The outer wall of the bottle body (1) is provided with a marking portion, which can be used for spraying characters, coding, and marking operations.

8. The self-priming liquid sampling bottle according to claim 1, characterized in that: The bottle stopper (2) comprises: A bottle stopper body (21), the bottle stopper body (21) being used to be embedded in the bottle mouth (13); a first sealing flange (22), the first sealing flange (22) being arranged at one end of the bottle stopper body (21) and protruding from the bottle stopper body (21) in the circumferential direction and being used for contacting with the end surface of the bottle mouth (13) to form a seal; A second sealing flange (23), the second sealing flange (23) is arranged at the other end of the bottle stopper body (21) and protrudes from the bottle stopper body (21) in the circumferential direction for contacting with the stopper (132) in the bottle mouth (13) to form a seal.

9. The self-priming liquid sampling bottle according to claim 8, characterized in that: The shape of the second sealing flange (23) matches the shape of the stopper (132). The stopper (132) in the bottle mouth (13) comprises a plane, and the contact surface between the second sealing flange (23) and the stopper (132) in the bottle mouth (13) is a plane; or, The stopper (132) in the bottle mouth (13) comprises an inclined surface, and an end of the stopper (132) close to the axis of the bottle body is inclined toward a side close to the bottle bottom, and a contact surface between the second sealing flange (23) and the stopper (132) in the bottle mouth (13) is an inclined surface; or, The stopper (132) in the bottle mouth (13) comprises a concave arc surface, and the contact surface between the second sealing flange (23) and the stopper (132) in the bottle mouth (13) is a arc surface.

10. A sampling method, characterized in that: The self-priming liquid sampling bottle according to any one of claims 1 to 9, wherein the steps of the sampling method include: The bottle body (1) is squeezed to cause the corrugated section (12) to fold and discharge part of the air in the inner chamber of the bottle body (1); the bottle body (1) and the bottle stopper (2) are assembled and sealed to form a complete sampling bottle, and a negative pressure is formed in the inner chamber of the sampling bottle; The sampling bottle is pneumatically transported to the sampling station through the conveying pipeline, and the sampling needle pierces the bottle stopper (2) into the chamber, and the liquid sample in the material tank is sucked into the sampling bottle through the sampling needle by negative pressure; By observing the liquid level in the sampling bottle, it is determined whether the sampling volume has reached a preset volume. When the liquid level is lower than a preset height, the manipulator drives the sampling bottle to move downward repeatedly multiple times so that the corrugated section (12) is folded to discharge part of the air in the chamber of the sampling bottle, and the liquid sample in the material tank is sucked into the sampling bottle through the sampling needle again by negative pressure until the liquid level reaches a preset height. The robot arm drives the sampling bottle to move upward and away from the sampling needle, and the sampling bottle is pneumatically transported to the next area through the conveying pipeline.

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